Benjamin "Zags" Zagorsky: Handling Timezones in Python. The talks from PyCon US have started appearing on YouTube. I found this one really useful for shoring up my Python timezone knowledge: It reminds that if your code calls datetime.now(), datetime.utcnow() or date.today(), you have timezone bugs—you’ve been working with ambiguous representations of instances in time that could span a 26 hour interval from UTC-12 to UTC+14. date.today() represents a 24 hour period and hence is prone to timezone surprises as well. My code has a lot of timezone bugs!
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